Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 19, 2007
Patent Application Number
09871243
Date Filed
May 31, 2001
Patent Citations Received
Patent Primary Examiner
Patent abstract
An improved method enables preparation of articles for a variety of applications, including embossing or otherwise shaping to form a variety of articles. A plurality of thin, preferably resin-impregnated, flexible graphite sheets are arranged to form zones in a composite material having a graded density or other characteristic. Variation of properties between zones in the stock material formed is useful for achieving a desired set of properties in the formation of articles such as those useful in electrochemical fuel cells and double-layer capacitors.
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